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    • 2. 发明授权
    • Transmission mode and rate selection for a wireless communication system
    • 无线通信系统的传输模式和速率选择
    • US08355372B2
    • 2013-01-15
    • US12463078
    • 2009-05-08
    • Santosh AbrahamArnaud MeylanJay Rodney Walton
    • Santosh AbrahamArnaud MeylanJay Rodney Walton
    • H04W4/00
    • H04L25/0202H04B7/0421H04L1/0002H04L1/0026
    • To select a transmission mode to use for a data transmission via a MIMO channel from station A to station B, station A obtains channel information used for spatial processing and determines the age of this information. Station A selects one of multiple transmission modes based on the age of the channel information and possibly other information (e.g., the fading characteristic of the MIMO channel). To select rate(s) to use for the data transmission, station A obtains channel state information (CSI) indicative of the received signal quality for the MIMO channel, e.g., received SNRs or “initial” rates. Station A determines the age of the CSI and selects one or more “final” rates based on the CSI, the age of the CSI, the selected transmission mode, and possibly other information. Station A processes data in accordance with the selected transmission mode and final rate(s) and transmits the processed data to station B.
    • 为了选择通过从站A到站B的MIMO信道进行数据传输的传输模式,站A获得用于空间处理的信道信息,并确定该信息的年龄。 站A基于信道信息的年龄和可能的其他信息(例如,MIMO信道的衰落特性)来选择多种传输模式之一。 为了选择用于数据传输的速率,站A获得指示MIMO信道的接收信号质量的信道状态信息(CSI),例如接收到的SNR或初始速率。 站A确定CSI的年龄,并且基于CSI,CSI的年龄,所选择的传输模式以及可能的其他信息来选择一个或多个最终速率。 站A根据选择的传输模式和最终速率处理数据,并将处理的数据发送到站B.
    • 3. 发明申请
    • TRANSMISSION MODE AND RATE SELECTION FOR A WIRELESS COMMUNICATION SYSTEM
    • 无线通信系统的传输模式和速率选择
    • US20090290655A1
    • 2009-11-26
    • US12463078
    • 2009-05-08
    • Santosh AbrahamArnaud MeylanJay Rodney Walton
    • Santosh AbrahamArnaud MeylanJay Rodney Walton
    • H04B7/02
    • H04L25/0202H04B7/0421H04L1/0002H04L1/0026
    • To select a transmission mode to use for a data transmission via a MIMO channel from station A to station B, station A obtains channel information used for spatial processing and determines the age of this information. Station A selects one of multiple transmission modes based on the age of the channel information and possibly other information (e.g., the fading characteristic of the MIMO channel). To select rate(s) to use for the data transmission, station A obtains channel state information (CSI) indicative of the received signal quality for the MIMO channel, e.g., received SNRs or “initial” rates. Station A determines the age of the CSI and selects one or more “final” rates based on the CSI, the age of the CSI, the selected transmission mode, and possibly other information. Station A processes data in accordance with the selected transmission mode and final rate(s) and transmits the processed data to station B.
    • 为了选择通过从站A到站B的MIMO信道进行数据传输的传输模式,站A获得用于空间处理的信道信息,并确定该信息的年龄。 站A基于信道信息的年龄和可能的其他信息(例如,MIMO信道的衰落特性)来选择多种传输模式之一。 为了选择用于数据传输的速率,站A获得指示MIMO信道的接收信号质量的信道状态信息(CSI),例如接收到的SNR或“初始”速率。 站A确定CSI的年龄,并且基于CSI,CSI的年龄,所选择的传输模式以及可能的其他信息来选择一个或多个“最终”速率。 站A根据选择的传输模式和最终速率处理数据,并将处理的数据发送到站B.
    • 4. 发明授权
    • Transmission mode and rate selection for a wireless communication system
    • 无线通信系统的传输模式和速率选择
    • US07564814B2
    • 2009-07-21
    • US11101086
    • 2005-04-06
    • Santosh AbrahamArnaud MeylanJay Rodney Walton
    • Santosh AbrahamArnaud MeylanJay Rodney Walton
    • H04W4/00
    • H04L25/0202H04B7/0421H04L1/0002H04L1/0026
    • To select a transmission mode to use for a data transmission via a MIMO channel from station A to station B, station A obtains channel information used for spatial processing and determines the age of this information. Station A selects one of multiple transmission modes based on the age of the channel information and possibly other information (e.g., the fading characteristic of the MIMO channel). To select rate(s) to use for the data transmission, station A obtains channel state information (CSI) indicative of the received signal quality for the MIMO channel, e.g., received SNRs or “initial” rates. Station A determines the age of the CSI and selects one or more “final” rates based on the CSI, the age of the CSI, the selected transmission mode, and possibly other information. Station A processes data in accordance with the selected transmission mode and final rate(s) and transmits the processed data to station B.
    • 为了选择通过从站A到站B的MIMO信道进行数据传输的传输模式,站A获得用于空间处理的信道信息,并确定该信息的年龄。 站A基于信道信息的年龄和可能的其他信息(例如,MIMO信道的衰落特性)来选择多种传输模式之一。 为了选择用于数据传输的速率,站A获得指示MIMO信道的接收信号质量的信道状态信息(CSI),例如接收到的SNR或“初始”速率。 站A确定CSI的年龄,并且基于CSI,CSI的年龄,所选择的传输模式以及可能的其他信息来选择一个或多个“最终”速率。 站A根据选择的传输模式和最终速率处理数据,并将处理的数据发送到站B.
    • 8. 发明授权
    • Standby time improvements using sub-networks
    • 使用子网的待机时间改进
    • US08274956B2
    • 2012-09-25
    • US11680400
    • 2007-02-28
    • Arnaud MeylanManoj M. DeshpandeSanjiv Nanda
    • Arnaud MeylanManoj M. DeshpandeSanjiv Nanda
    • H04W4/00
    • H04W72/005H04W52/0216H04W52/0219H04W88/02Y02D70/142Y02D70/144Y02D70/146Y02D70/22Y02D70/23Y02D70/26
    • Broadcast or multicast traffic is classified into different types of traffic such that different types of traffic are transmitted over different sub-networks. In addition, different transmission schedules may be associated with each of the different sub-networks. A device may thus be configured to receive only a selected portion of the different types of traffic by only waking from a power save mode at the intervals at which the corresponding sub-network sends the traffic. The standby time of the wireless station may thus be improved because the wireless station may awaken less frequently and for shorter periods of time. Different sub-networks carrying different types of broadcast and multicast traffic may be implemented in an 802.11-based system. For example, a single access point may define multiple basic service set identifiers for a single wireless channel.
    • 广播或多播流量分为不同类型的流量,使得不同类型的流量在不同的子网络上传输。 此外,不同的传输时间表可以与每个不同的子网络相关联。 因此,设备可以被配置为仅以相应的子网络发送业务的间隔从省电模式唤醒来仅接收不同类型业务的所选部分。 因此,无线站的待机时间可以被改善,因为无线站可以较少地频繁地唤醒并且在较短的时间段内唤醒。 承载不同类型的广播和多播业务的不同子网络可以在基于802.11的系统中实现。 例如,单个接入点可以为单个无线信道定义多个基本服务集标识符。
    • 10. 发明申请
    • STANDBY TIME IMPROVEMENTS FOR STATIONS IN A WIRELESS NETWORK
    • 无线网络中的站点的待机时间改进
    • US20070297438A1
    • 2007-12-27
    • US11680302
    • 2007-02-28
    • Arnaud MeylanManoj DeshpandeSanjiv Nanda
    • Arnaud MeylanManoj DeshpandeSanjiv Nanda
    • H04L12/413
    • H04W52/0225H04W52/0216H04W84/12Y02D70/142Y02D70/144Y02D70/146Y02D70/23
    • Techniques to improve the standby time of a station in a wireless network are described. An access point may advertise or convey a maximum listen interval and/or an association timeout supported by that access point. A station may operate in a power-save mode and may wake up every listen interval to receive a beacon and any potential traffic for the station. The station may select a suitable listen interval based on the maximum listen interval. The station may be dormant for a longer duration than the listen interval and may become active at least once in every association timeout in order to keep the association with the access point alive. The access point may also send broadcast and multicast traffic that might be of interest to stations in the power-save mode less frequently and using a special indication message.
    • 描述了改善无线网络中的站的待机时间的技术。 接入点可以通告或传达由该接入点支持的最大监听间隔和/或关联超时。 站可以在省电模式下操作,并且可以在每个监听间隔中唤醒以接收该信标和该站的任何潜在业务。 该站可以基于最大监听间隔来选择合适的监听间隔。 该站可以比监听间隔更长的持续时间休眠,并且可以在每个关联超时中至少活动一次,以便保持与接入点的关联。 接入点还可以频发地发送节电模式中的站可能感兴趣的广播和组播流量,并使用特殊的指示消息。